CN113187754B - Fan control method and system with condensation preventing function - Google Patents
Fan control method and system with condensation preventing function Download PDFInfo
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- 238000009833 condensation Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 32
- 230000005494 condensation Effects 0.000 title claims abstract description 24
- 239000013589 supplement Substances 0.000 claims abstract description 49
- 230000001502 supplementing effect Effects 0.000 claims abstract description 35
- 238000010586 diagram Methods 0.000 claims abstract description 31
- 238000012544 monitoring process Methods 0.000 claims abstract description 27
- 230000001105 regulatory effect Effects 0.000 claims description 21
- 238000007599 discharging Methods 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 12
- 230000033228 biological regulation Effects 0.000 claims description 10
- 238000004364 calculation method Methods 0.000 claims description 9
- 230000007958 sleep Effects 0.000 claims description 8
- 230000020169 heat generation Effects 0.000 claims description 7
- 230000001276 controlling effect Effects 0.000 claims description 4
- 238000013500 data storage Methods 0.000 claims description 4
- 230000006870 function Effects 0.000 description 23
- 230000008569 process Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000005059 dormancy Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000009469 supplementation Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/008—Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20209—Thermal management, e.g. fan control
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses a fan control method and a fan control system with an anti-condensation function, wherein the method comprises the following steps: s100, monitoring the working state of the power supply module, and obtaining the total exhaust air volume and the total heat productivity according to the working state of the power supply module; s200, collecting a first temperature and humidity of the environment where the power supply module is located, and obtaining a supplementary air quantity according to the first temperature, the humidity, the total exhaust air quantity and the total heat quantity based on an air state enthalpy-humidity diagram; s300, driving a fan of the power module in the dormant state according to the air supplement amount, and adjusting the rotating speed; or controlling an air supplementing device to supplement air according to the air supplementing quantity, wherein the air supplementing device is arranged in an air channel of the power cabinet body where the power module is located. The invention can monitor the power state in real time, adjust the fan of the power module in the dormant state or adopt the air supplement device to supplement air, effectively prevent the risk of condensation point caused by the adjustment of the fan and improve the safety of the power cabinet.
Description
Technical Field
The invention relates to the technical field of fan control, in particular to a fan control method and system with an anti-condensation function.
Background
The power supply cabinet is mainly a working cabinet of a power supply module, the power supply module mainly has the function of providing pre-input current and voltage for the charging and discharging process of the lithium battery, and the power supply module is composed of a series of heating elements. During formation and capacity grading, the number of batteries in a common power cabinet is large due to the consideration of capacity, and the height of the cabinet body reaches one or two and ten meters. A large amount of heat is dissipated when a power module in the power cabinet is in a charging and discharging state, a special speed regulation fan is correspondingly arranged on the power module for heat dissipation, and the rotation speed of the fan can be adjusted by the regulation fan according to whether the battery works or not.
The exhaust temperature of the fan is not suitable to be too high, otherwise, a condensation phenomenon may occur, which is a great danger to the production of the battery. However, since the work of a plurality of power modules is not synchronous, the adjustment of the rotating speed of the fan can only depend on the air inlet temperature of the fan, and the power modules are various, so that the rotating speed of the fan is difficult to accurately control, and the control precision of the temperature and the humidity in a factory building is difficult to improve. Therefore, the conventional fan rotating speed control method is adopted at present, the temperature and the humidity in a factory building often fluctuate within a certain range, so that the dew point temperature fluctuates, and the condensation risk exists.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a fan control method with a condensation prevention function, which can effectively prevent condensation.
The invention also provides a fan control system with the anti-condensation function, which has the fan control method with the anti-condensation function.
According to the first aspect of the invention, the fan control method with the anti-condensation function comprises the following steps: s100, monitoring the working state of a power supply module, and obtaining the total exhaust air volume and the total heat productivity according to the working state of the power supply module; s200, collecting a first temperature and humidity of the environment where the power supply module is located, and obtaining a wind compensation amount according to the first temperature, the humidity, the total exhaust amount and the total heat productivity based on an air state enthalpy-humidity diagram; and S300, adjusting the air exhaust quantity of the power cabinet body where the power module is located according to the air supply quantity.
The fan control method with the condensation preventing function provided by the embodiment of the invention at least has the following beneficial effects: by monitoring the power state, calculating the air supplement amount based on the air state enthalpy-humidity diagram, adjusting the fan of the power module in the dormant state or adopting the air supplement device to supplement air, the condensation phenomenon caused by fan speed regulation can be effectively avoided, and the safety of the power cabinet is improved.
According to some embodiments of the invention, the operating state of the power supply module comprises: a charge-discharge state and a sleep state; the obtaining of the total air exhaust amount and the total heat productivity according to the working state of the power supply module comprises the following steps: acquiring a first quantity of the power supply modules in a charging and discharging state and a second quantity of the power supply modules in a dormant state, and acquiring a first exhaust volume required by the power supply modules in the charging and discharging state and a second exhaust volume of the power supply modules in the dormant state; counting the air exhaust volume of the power module in a charging and discharging state according to the first quantity and the first air exhaust volume, counting the air exhaust volume of the power module in a dormant state according to the second quantity and the first air exhaust volume, and calculating to obtain the total air exhaust volume; and acquiring the heat productivity of the single power module in the charging and discharging state, and obtaining the total heat productivity according to the first quantity.
According to some embodiments of the invention, said step S200 comprises: s210, according to the first temperature, the total exhaust air quantity and the total heating quantity, wherein the first exhaust air temperature represents the average temperature of air exhausted by a fan of the power supply module in a charging and discharging state; s220, obtaining a dew point temperature according to the first exhaust air temperature and the humidity based on the air state enthalpy-humidity diagram; s230, when the dew point temperature is higher than the first temperature, based on the air state enthalpy-humidity diagram, taking the first temperature as the dew point temperature, and acquiring the corresponding air dry bulb temperature under the humidity as a second exhaust air temperature; and acquiring a third air exhaust quantity according to the total heating value, the first temperature and the second air exhaust temperature to obtain an air supplement quantity.
According to some embodiments of the invention, the method of calculating the first discharge air temperature comprises:
wherein, T p Representing the first exhaust air temperature, Q representing the total heat generation, M t Represents the total exhaust air quantity, T k Denotes the first temperature, c p Represents the specific heat capacity at constant pressure of air.
According to some embodiments of the present invention, the method for obtaining a third exhaust air volume according to the total heat generation amount, the first temperature and the second exhaust air temperature to obtain an air supplement volume further includes: s231, acquiring a third air exhaust volume according to the total heating value, the first temperature and the second air exhaust temperature:
wherein Q represents the total heat generation amount, c p Represents the specific heat capacity at constant pressure, T p ' represents the two exhaust air quantities, T k Denotes the first temperature, M' t Representing the third air discharge amount; and S232, obtaining the air supplement amount according to the third air exhaust amount and the total air exhaust amount.
According to some embodiments of the invention, said step S300 further comprises: obtaining the number N of fans of the power supply module to be regulated in a dormant state according to the air supplement quantity:
wherein M is w 、M f Respectively representing the air exhaust volume of the power module in a charge-discharge state and a dormant state;
the number of revolutions of the fan to be adjusted is adjusted as follows:
n′＝n×(M′ t ×a/M t )
where n represents the rotation speed before adjustment, n' represents the rotation speed after adjustment, and a represents an adjustment coefficient of 1 or more.
According to some embodiments of the invention, said step S300 comprises: and controlling an air supplementing device to supplement air according to the air supplementing quantity, wherein the air supplementing device is arranged in an air channel of the power cabinet body where the power module is located.
According to a second aspect of the invention, the fan control system with the condensation preventing function comprises: the power supply state monitoring module is used for monitoring the working state of the power supply module and counting the number of the power supply modules according to the working state in a classified manner; the environment parameter monitoring module is used for acquiring first temperature and humidity of the environment where the power supply module is located; the air supplementing monitoring module is used for obtaining total exhaust air quantity and total heat productivity according to the working state of the power supply module and obtaining air supplementing quantity according to the first temperature, the humidity, the total exhaust air quantity and the total heat productivity based on an air state enthalpy-humidity diagram; the air supplement execution module is used for supplementing air and comprises: the second speed regulating module is used for driving a fan of the power supply module in a dormant state according to the air supplement amount and regulating the rotating speed; or the air supplementing device is arranged in an air channel of the power cabinet body where the power module is located and used for supplementing air according to the air supplementing quantity.
The fan control system with the condensation preventing function, which is disclosed by the embodiment of the second aspect of the invention, has at least the following beneficial effects: through monitoring the power state, calculate the volume of supplementing wind based on air state enthalpy-humidity diagram, carry out the tonifying wind through the fan or the tonifying wind device of the power module that is in the dormancy state according to dew point temperature, can avoid the condensation phenomenon that the fan speed governing caused effectively, improved the security of power cabinet.
According to some embodiments of the invention, the air supplement monitoring module comprises: the first speed regulation control module is used for obtaining a first exhaust temperature according to the first temperature, the total exhaust volume and the total heat productivity, and regulating the speed of a fan of the power supply module in a charge-discharge state according to the first exhaust temperature; the dew point air supplementing module is used for acquiring corresponding air dry bulb temperature under the humidity as second exhaust air temperature by taking the first temperature as a dew point based on the air state enthalpy-humidity diagram; and acquiring a third air exhaust quantity according to the total heating value, the first temperature and the second air exhaust temperature to obtain an air supplement quantity.
According to some embodiments of the invention, the dew point air supplementing module further comprises a dew point judging module, which is used for obtaining the dew point temperature according to the first exhaust air temperature and the humidity, and determining whether the dew point temperature is greater than or equal to the first temperature.
According to some embodiments of the present invention, the second speed regulation module further includes a control parameter calculation module, configured to obtain, according to the air supplement amount, the number of fans of the power supply module to be regulated in the sleep state and the regulated number of revolutions.
According to some embodiments of the invention, further comprising: the dew point data storage module is used for storing first data, and the first data are as follows: and constructing the relation among the air dry-bulb temperature, the relative humidity and the dew point temperature by function fitting according to the air state enthalpy-humidity diagram to obtain data.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic flow chart of a method according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating control of a fan in a method according to an embodiment of the present invention;
FIG. 3 is a block diagram of the system of an embodiment of the present invention.
Reference numerals:
the system comprises a power state monitoring module 100, an environmental parameter monitoring module 200, an air supplement monitoring module 300, a first speed regulation control module 310, a dew point air supplement module 420 and an air supplement execution module 400.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and more than, less than, more than, etc. are understood as excluding the present number, and more than, less than, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated. In the description of the present invention, the step numbers are merely used for convenience of description or for convenience of reference, and the sequence numbers of the steps do not mean the execution sequence, and the execution sequence of the steps should be determined by the functions and the inherent logic, and should not constitute any limitation to the implementation process of the embodiment of the present invention.
Referring to fig. 1, a method of an embodiment of the invention includes: s100, monitoring the working state of the power supply module, and obtaining the total exhaust air volume and the total heat productivity according to the working state of the power supply module; s200, acquiring a first temperature and humidity of the environment where the power supply module is located, and obtaining a supply air quantity according to the first temperature, the humidity, the total exhaust air quantity and the total heat quantity based on an air state enthalpy-humidity diagram; and S300, adjusting the air exhaust volume of the power cabinet body where the power module is located according to the air supply volume.
In the embodiment of the invention, the method for adjusting the air exhaust volume of the power cabinet body where the power module is located comprises the following steps: (1) Driving a fan of the power supply module in a dormant state, and adjusting the rotating speed; or (2) controlling an air supplementing device to supplement air according to the air supplementing quantity, wherein the air supplementing device is arranged in an air channel of the power cabinet body where the power module is located.
In the embodiment of the invention, the flow control of the fan refers to fig. 2. The operating condition of real-time supervision power module, according to operating condition statistics power module's quantity in the power cabinet, promptly: first number N of power modules in charge-discharge state w And a second number N of power modules in a sleep state f . And then, calculating the total air exhaust amount and the total heat productivity of the power cabinet according to the working state and the corresponding quantity of the power modules. And normally regulating the speed of the fan according to the required total air exhaust amount and the total heat productivity, namely, controlling the fan corresponding to the power supply module in a charging and discharging state and regulating the air speed. Then, the temperature of the plant where the power module is located, i.e. the first temperature, is obtained, whether the dew point temperature is greater than or equal to the first temperature (the plant temperature in fig. 2) is judged, if yes, the rotating speed of the fan needs to be corrected, i.e. the drive is in a dormant stateThe wind speed of the fan corresponding to the power module is controlled. If not, the correction is not needed, and the fan keeps normal operation. It should be appreciated that the monitoring of the operational status of the power module and the control of the fan speed as described above will continue during operation of the fan.
The following describes the calculation and control process in the embodiment of the present invention in detail by taking the first way to adjust the air exhaust volume of the power cabinet where the power module is located (i.e. to drive the blower of the power module in the sleep state and adjust the rotation speed).
(1) Monitoring the operating state of a power module, and acquiring a first temperature T of an environment (e.g., a plant) in which the power module is located k And humidity
And calculating the total air exhaust quantity Mt and the total heat productivity Q of the power cabinet, and performing conventional linear regulation on the rotating speed n of the fan.
The operating condition of real-time supervision power module, according to operating condition statistics power module's quantity in the power cabinet, promptly: first number N of power modules in charge-discharge state w And a second number N of power modules in a sleep state f . Through the wind tunnel test bed, the exhaust air volume M of the power supply module in a charging and discharging state can be measured w The exhaust air volume in the dormant state is M f . The total exhaust air volume M of the cabinet body at the moment can be obtained t ：
M t ＝N w ×M w +N f ×M f
Heat productivity Q of single power supply module during working can be measured through thermal power test bed c The heat generation amount in the sleep state is negligible. The total heating value is therefore Q: q = N w ×Q c 。
The method comprises the steps of monitoring the environment (such as a factory building) where a power supply module is located in real time, and acquiring a first temperature T k Relative humidity of
The working state can be calculated by theoretical calculation through a calculation formula of heatThe average temperature of the discharged air (or called air supply) of the fan of the power module in the state (i.e. in the charge-discharge state), i.e. the first exhaust temperature:
wherein c is p Is the constant pressure specific heat capacity of air.
And the fan of the power module in the working state is regulated. According to a similar conversion curve of the fan, the exhaust volume of the exhaust fan and the rotating speed of the fan are in a linear relation, namely Mp '/Mp = n'/n, wherein Mp 'and Mp are respectively the exhaust volume of the fan before and after adjustment, and n' and n are respectively the rotating speed of the fan before and after adjustment. Therefore, the rotating speed of the fan can be adjusted according to the air exhaust volume before and after the fan.
(2) Current dew point temperature T o The calculation of (2).
According to the air state enthalpy-humidity diagram, the dry bulb temperature T of the air is constructed through function fitting g Relative humidity of
And dew point temperature T s The relationship function of (1):
So that when the temperature and the humidity of the current environment are input, the corresponding dew point temperature is obtained. I.e. let the dry bulb temperature T of the air g ＝T k ，T k Is at a first temperature (i.e., ambient temperature) and is @>
Inputting a relationship function for a current ambient humidity>
The dew point temperature is obtained, namely the current dew point humidity T o 。
(3) And (5) condensation and air supplementation treatment.
Judging the dew point temperature T o Whether or not it is equal to or higher than the first temperature T k ；
If not, T is o <T k If so, condensation cannot occur, and the fan normally operates after the control is finished;
if so, i.e. T o ≥T k At this time, condensation occurs, and air exhaust needs to be enhanced, namely air supplement.
Based on the psychrometric chart of the air state, the current ambient temperature, i.e., the first temperature T k As dew point temperature, according to the relationship:
through reverse calculation, the corresponding second exhaust air temperature T is obtained p ' (i.e., ambient temperature as dew point temperature T) g The corresponding exhaust air volume). Instant T s ＝T k And make->
For the current ambient humidity, is based on a relationship function>
Can obtain corresponding T g At this time, the result T is obtained g I.e. the second exhaust air temperature T p '. According to psychrometric chart of air state, due to T o ≥T k Obviously, the first exhaust air temperature is more than or equal to the second exhaust air temperature T p ′。
Then, the temperature T according to the second exhaust air is calculated p ', obtaining a third air exhaust amount after air supplement:
wherein Q represents a total calorific value, c p Represents the specific heat capacity at constant pressure of air.
Due to T o ≥T k In this case, the amount of air discharged after air supply (i.e., the third amount of air discharged) M 'is increased by making air supply necessary and increasing the amount of air discharged' t Is necessarily greater than M t 。
Firstly, calculating the number of fans of the power supply module to be regulated in a dormant state:
and then the number of revolutions of the fans to be adjusted is adjusted as follows:
n′＝n×(M′ t ×a/M t )
where n represents the rotation speed before adjustment, n' represents the rotation speed after adjustment, and a represents an adjustment coefficient of 1 or more. In order to consider a certain safety margin, the value of the adjustment coefficient a may be set to 1.05.
In an embodiment of the invention, the relation function
In practice, it may also be, for example, a graph, data file or database or the like, for indicating the dry bulb temperature T of the air g Relative humidity->
And dew point temperature T s And (5) mapping relation. Thus, at a known air dry bulb temperature T g Relative humidity->
The time can inquire the dew point temperature T s (ii) a At a known dew point temperature T s Relative humidity->
The temperature T of the air dry bulb can be inquired in reverse g 。
In other embodiments of the present invention, an additional air supplement device may be further added in the air duct of the power supply cabinet where the power supply module is located, and the air supplement device may be based on M' t -M t And adjusting the air supplement amount by the difference value.
It should be understood that, in the embodiment of the present invention, even if the types of the power modules in the power cabinet are different, the total air volume and the total heat required in the power cabinet can be calculated according to the types of the power modules according to the above method, so as to adjust the air supplement according to the current dew point temperature.
The system of the embodiment of the present invention, as shown in fig. 3, includes the following modules: the power state monitoring module 100 is used for monitoring the working state of the power modules and classifying and counting the number of the power modules according to the working state; the environment parameter monitoring module 200 is used for acquiring a first temperature and humidity of the environment where the power supply module is located; the air supplementing monitoring module 300 is used for obtaining the total air exhaust amount and the total heat productivity according to the working state of the power supply module and obtaining the air supplementing amount according to the first temperature, the humidity, the total air exhaust amount and the total heat productivity based on an air state enthalpy-humidity diagram; the wind supplementing execution module 400 is used for supplementing wind to the power cabinet body where the power module is located, and includes: the second speed regulating module is used for driving a fan of the power supply module in a dormant state according to the air supplement amount and regulating the rotating speed; or the air supplementing device is arranged in an air channel of the power cabinet body where the power module is located and used for supplementing air according to the air supplementing quantity.
Referring to fig. 3, the air supplement monitoring module 300 includes: the first speed regulation control module 310 is configured to obtain a first exhaust temperature according to the first temperature, the total exhaust amount, and the total heat productivity, and regulate the speed of the fan of the power module in the charge-discharge state according to the first exhaust temperature; the dew point air supplementing module 320 is used for acquiring corresponding air dry bulb temperature under humidity as second exhaust air temperature by taking the first temperature as a dew point based on an air state enthalpy-humidity diagram; and acquiring a third air exhaust amount according to the total heating value, the first temperature and the second air exhaust temperature to obtain the air supplement amount.
And not shown in the figure, the dew point air supplementing module 320 further includes a dew point determining module, configured to obtain a dew point temperature according to the first exhaust air temperature and humidity, and determine whether the dew point temperature is greater than or equal to the first temperature. If the dew point judgment module detects that the dew point temperature is greater than or equal to the first temperature, the dew condensation risk is considered to exist, the air supplement amount is calculated, and the air supplement execution module 400 is driven to supplement air.
The second speed regulation module further comprises a control parameter calculation module which is used for obtaining the number of fans of the power supply module to be regulated in the dormant state and the regulated revolution according to the air supplement quantity. If the air supplement execution module 400 performs air supplement by using the fans corresponding to the existing power modules in the dormant state (i.e., the second speed adjustment module performs air supplement operation), the number of fans to be driven and the adjusted rotation speed need to be calculated by the control parameter calculation module, and then the corresponding number of fans are driven and the rotation speed of the fans is adjusted.
The embodiment of the invention also comprises the following steps: the dew point data storage module is used for storing first data, and the first data are as follows: and (3) according to the enthalpy-humidity diagram of the air state, establishing the relation between the dry-bulb temperature, the relative humidity and the dew point temperature of the air through function fitting, and obtaining data.
Although specific embodiments have been described herein, those of ordinary skill in the art will recognize that many other modifications or alternative embodiments are equally within the scope of this disclosure. For example, any of the functions and/or processing capabilities described in connection with a particular device or component may be performed by any other device or component. In addition, while various illustrative implementations and architectures have been described in accordance with embodiments of the present disclosure, those of ordinary skill in the art will recognize that many other modifications of the illustrative implementations and architectures described herein are also within the scope of the present disclosure.
Certain aspects of the present disclosure are described above with reference to block diagrams and flowchart illustrations of systems, methods, systems, and/or computer program products according to example embodiments. It will be understood that one or more blocks of the block diagrams and flowchart illustrations, and combinations of blocks in the block diagrams and flowchart illustrations, respectively, can be implemented by executing computer-executable program instructions. Also, according to some embodiments, some blocks of the block diagrams and flow diagrams may not necessarily be performed in the order shown, or may not necessarily be performed in their entirety. In addition, additional components and/or operations beyond those shown in the block diagrams and flow diagrams may be present in certain embodiments.
Accordingly, blocks of the block diagrams and flowchart illustrations support combinations of means for performing the specified functions, combinations of elements or steps for performing the specified functions and program instruction means for performing the specified functions. It will also be understood that each block of the block diagrams and flowchart illustrations, and combinations of blocks in the block diagrams and flowchart illustrations, can be implemented by special purpose hardware-based computer systems that perform the specified functions, elements or steps, or combinations of special purpose hardware and computer instructions.
The program modules, applications, etc. described herein may include one or more software components, including, for example, software objects, methods, data structures, etc. Each such software component may include computer-executable instructions that, in response to execution, cause at least a portion of the functionality described herein (e.g., one or more operations of the illustrative methods described herein) to be performed.
The software components may be encoded in any of a variety of programming languages. An illustrative programming language may be a low-level programming language, such as assembly language associated with a particular hardware architecture and/or operating system platform. Software components that include assembly language instructions may need to be converted by an assembler program into executable machine code prior to execution by a hardware architecture and/or platform. Another exemplary programming language may be a higher level programming language, which may be portable across a variety of architectures. Software components that include higher level programming languages may need to be converted to an intermediate representation by an interpreter or compiler before execution. Other examples of programming languages include, but are not limited to, a macro language, a shell or command language, a job control language, a scripting language, a database query or search language, or a report writing language. In one or more exemplary embodiments, a software component containing instructions of one of the above programming language examples may be executed directly by an operating system or other software component without first being converted to another form.
The software components may be stored as files or other data storage constructs. Software components of similar types or related functionality may be stored together, such as in a particular directory, folder, or library. Software components may be static (e.g., preset or fixed) or dynamic (e.g., created or modified at execution time).
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (11)
1. A fan control method with a condensation preventing function is characterized by comprising the following steps:
s100, monitoring the working state of a power supply module, and obtaining the total exhaust air volume and the total heating value according to the working state of the power supply module;
s200, collecting a first temperature and humidity of the environment where the power supply module is located, and obtaining a supplementary air quantity according to the first temperature, the humidity, the total exhaust air quantity and the total heat productivity based on an air state enthalpy-humidity diagram;
s300, adjusting the air exhaust quantity of the power cabinet body where the power module is arranged according to the air supply quantity, and specifically comprising the following steps: and driving a fan of the power module in a dormant state according to the air supplement amount, and adjusting the rotating speed, or controlling an air supplement device to supplement air according to the air supplement amount, wherein the air supplement device is arranged in an air channel of the power cabinet body where the power module is located.
2. The fan control method with the condensation preventing function according to claim 1, wherein the working state of the power module comprises: a charge-discharge state and a sleep state; obtaining the total exhaust air volume and the total heat productivity according to the working state of the power supply module comprises the following steps:
acquiring a first quantity of the power supply modules in a charging and discharging state and a second quantity of the power supply modules in a dormant state, and acquiring a first exhaust volume required by the power supply modules in the charging and discharging state and a second exhaust volume of the power supply modules in the dormant state;
counting the air exhaust volume of the power supply module in a charging and discharging state according to the first quantity and the first air exhaust volume, counting the air exhaust volume of the power supply module in a dormant state according to the second quantity and the first air exhaust volume, and calculating to obtain the total air exhaust volume;
and acquiring the heat productivity of the single power module in the charging and discharging state, and obtaining the total heat productivity according to the first quantity.
3. The blower fan control method with the condensation preventing function according to claim 1, wherein the step S200 includes:
s210, obtaining a first exhaust temperature according to the first temperature, the total exhaust amount and the total heating value, wherein the first exhaust temperature represents the average temperature of air exhausted by a fan of the power module in a charge-discharge state;
s220, obtaining a dew point temperature according to the first exhaust air temperature and the humidity based on the air state enthalpy-humidity diagram;
s230, when the dew point temperature is higher than the first temperature, based on the air state enthalpy-humidity diagram, taking the first temperature as the dew point temperature, and acquiring the corresponding air dry bulb temperature under the humidity as a second exhaust air temperature;
and acquiring a third air exhaust quantity according to the total heating value, the first temperature and the second air exhaust temperature to obtain an air supplement quantity.
4. The fan control method with the condensation preventing function according to claim 3, wherein the calculation method of the first exhaust air temperature comprises:
wherein, T p Representing the first exhaust air temperature, Q representing the total heat generation, M t Represents the total exhaust air quantity, T k Denotes the first temperature, c p Represents the specific heat capacity at constant pressure of air.
5. The fan control method with the condensation preventing function according to claim 3, wherein the method for obtaining a third air discharge amount according to the total heat generation amount, the first temperature and the second air discharge temperature to obtain an air supply amount further comprises:
s231, acquiring a third air exhaust volume according to the total heating value, the first temperature and the second air exhaust temperature:
wherein Q represents the total heat generation amount, c p Represents the specific heat capacity at constant pressure, T p ' represents the second discharge air temperature, T k Represents the first temperature, M' t Representing the third exhaust air volume;
and S232, obtaining the air supplement quantity according to the third air exhaust quantity and the total air exhaust quantity.
6. The fan control method with the condensation preventing function according to claim 5, wherein the step S300 comprises:
obtaining the number N of fans of the power supply module to be regulated in a dormant state according to the air supplement quantity:
wherein, M w 、M f Respectively representing the air exhaust volume of the power supply module in a charge-discharge state and a dormant state;
the number of revolutions of the fan to be adjusted is adjusted as follows:
n′＝n×(M t ′×a/M t )
where n represents the rotation speed before adjustment, n' represents the rotation speed after adjustment, and a represents an adjustment coefficient of 1 or more.
7. A fan control system with anti-condensation function, performing the method of any of claims 1 to 6, comprising:
the power supply state monitoring module is used for monitoring the working state of the power supply module and counting the number of the power supply modules according to the working state in a classified manner;
the environment parameter monitoring module is used for acquiring first temperature and humidity of the environment where the power supply module is located;
the air supplementing monitoring module is used for obtaining total exhaust air quantity and total heat productivity according to the working state of the power supply module and obtaining air supplementing quantity according to the first temperature, the humidity, the total exhaust air quantity and the total heat productivity based on an air state enthalpy-humidity diagram;
the air supplement execution module is used for supplementing air to the power cabinet body where the power module is located, and comprises: the second speed regulating module is used for driving a fan of the power supply module in a dormant state according to the air supplement quantity and regulating the rotating speed; or the air supplementing device is arranged in an air channel of the power cabinet body where the power module is located and used for supplementing air according to the air supplementing quantity.
8. The blower control system with anti-condensation function according to claim 7, the air supplement monitoring module comprising:
the first speed regulation control module is used for obtaining a first exhaust temperature according to the first temperature, the total exhaust volume and the total heat productivity, and regulating the speed of a fan of the power supply module in a charge-discharge state according to the first exhaust temperature;
the dew point air supplementing module is used for acquiring corresponding air dry bulb temperature under the humidity as second exhaust air temperature by taking the first temperature as a dew point based on the air state enthalpy-humidity diagram; and acquiring a third air exhaust quantity according to the total heating value, the first temperature and the second air exhaust temperature to obtain an air supplement quantity.
9. The fan control system with a condensation preventing function according to claim 8, wherein the dew point air supplementing module further comprises a dew point determining module for obtaining a dew point temperature according to the first exhaust air temperature and the humidity, and determining whether the dew point temperature is greater than or equal to the first temperature.
10. The fan control system with the condensation preventing function according to claim 8, wherein the second speed regulating module further comprises a control parameter calculating module, and is configured to obtain the number of fans of the power module to be regulated in the sleep state and the regulated number of revolutions according to the air supply amount.
11. The fan control system with an anti-condensation function according to claim 8, further comprising:
the dew point data storage module is used for storing first data, and the first data are as follows: and according to the air state enthalpy-humidity diagram, establishing the relation among the air dry-bulb temperature, the relative humidity and the dew point temperature through function fitting, and obtaining data.
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| CN108281913B (en) * | 2018-02-08 | 2023-10-03 | 湖北中巽泰科技有限公司 | Cascade type circulating channel cooling, dehumidifying and condensation-preventing electric equipment guaranteeing system and method |
| CN111102731B (en) * | 2019-12-24 | 2021-05-04 | 珠海格力电器股份有限公司 | Anti-condensation control method and device and air conditioning equipment |
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